Best Time to Visit Mariehamn: Month-by-Month Guide
Best months for Mariehamn: July, August.
- Best months for Mariehamn: July, August.
- Peak season is August, July, September. Expect higher prices and more visitors (estimated from the climate, not from visitor counts).
- Wettest months: December, November, October.
- The least pleasant month is December (score 4.2).
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 1°C | -1°C | 43 mm | 11 | – | – | 4.2 |
| February | 0°C | -2°C | 29 mm | 8 | – | – | 4.2 |
| March | 1°C | -1°C | 28 mm | 7 | – | – | 4.5 |
| April | 4°C | 2°C | 29 mm | 7 | – | – | 5.2 |
| May | 8°C | 6°C | 33 mm | 7 | – | – | 6.0 |
| June | 13°C | 11°C | 48 mm | 8 | – | – | 6.6 |
| July | 17°C | 15°C | 48 mm | 8 | – | – | 7.3 |
| August | 18°C | 16°C | 55 mm | 10 | – | – | 7.0 |
| September | 14°C | 12°C | 54 mm | 9 | – | – | 6.6 |
| October | 9°C | 8°C | 62 mm | 12 | – | – | 5.5 |
| November | 6°C | 4°C | 60 mm | 13 | – | – | 4.8 |
| December | 3°C | 1°C | 56 mm | 13 | – | – | 4.2 |
Frequently asked questions
When is the best time to visit Mariehamn?
The best months are July, August.
When is the rainy season in Mariehamn?
The wettest months are December, November, October.